From 381b8bec47de1d343356afa8d6d7eb7c4a873699 Mon Sep 17 00:00:00 2001
From: Oleksandr Suvorov <oleksandr.suvorov@toradex.com>
Date: Wed, 31 Mar 2021 18:10:32 +0300
Subject: overlays: colibri-imx7: LCD-LVDS transceiver

Add the overlay to support the LCD-LVDS transceiver on Iris v2.0A
in single-channel RGB24 mode.

Related-to: ELB-3898
Signed-off-by: Oleksandr Suvorov <oleksandr.suvorov@toradex.com>
---
 ...imx7_parallel-rgb-lvds-rgb24-single_overlay.dts | 83 ++++++++++++++++++++++
 1 file changed, 83 insertions(+)
 create mode 100644 overlays/colibri-imx7_parallel-rgb-lvds-rgb24-single_overlay.dts

(limited to 'overlays/colibri-imx7_parallel-rgb-lvds-rgb24-single_overlay.dts')

diff --git a/overlays/colibri-imx7_parallel-rgb-lvds-rgb24-single_overlay.dts b/overlays/colibri-imx7_parallel-rgb-lvds-rgb24-single_overlay.dts
new file mode 100644
index 0000000..e5d407e
--- /dev/null
+++ b/overlays/colibri-imx7_parallel-rgb-lvds-rgb24-single_overlay.dts
@@ -0,0 +1,83 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+/*
+ * Copyright 2020-2021 Toradex
+ */
+
+// Enable the parallel RGB interface on the Colibri iMX7
+
+#include <dt-bindings/gpio/gpio.h>
+
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "toradex,colibri-imx7d",
+		     "toradex,colibri-imx7d-emmc",
+		     "toradex,colibri-imx7s";
+};
+
+&backlight {
+	status = "okay";
+};
+
+/* Need to be disabled due to overlapped pins SODIMM_55, SODIMM_63 */
+&flexcan1 {
+	status = "disabled";
+};
+
+&gpio2 {
+	/*
+	 * This switches the LVDS transceiver to VESA color mapping mode.
+	 */
+	LVDS_COLOR_MAP {
+		gpio-hog;
+		gpios = <13 GPIO_ACTIVE_HIGH>; /* SODIMM 95 */
+		line-name = "LVDS_COLOR_MAP";
+		output-low;
+	};
+};
+
+&gpio7 {
+	/*
+	 * This switches the LVDS transceiver to the 24-bit RGB mode.
+	 */
+	LVDS_RGB_MODE {
+		gpio-hog;
+		gpios = <2 GPIO_ACTIVE_HIGH>; /* SODIMM 63 */
+		line-name = "LVDS_RGB_MODE";
+		output-low;
+	};
+
+	/*
+	 * This switches the LVDS transceiver to the single-channel
+	 * output mode.
+	 */
+	LVDS_CH_MODE {
+		gpio-hog;
+		gpios = <3 GPIO_ACTIVE_HIGH>; /* SODIMM 55 */
+		line-name = "LVDS_CH_MODE";
+		output-high;
+	};
+
+	/* This turns on the LVDS transceiver */
+	LVDS_POWER_ON {
+		gpio-hog;
+		gpios = <11 GPIO_ACTIVE_HIGH>; /* SODIMM 99 */
+		line-name = "LVDS_POWER_ON";
+		output-high;
+	};
+};
+
+&lcdif {
+	status = "okay";
+};
+
+&panel_dpi {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_lvds_transceiver>;
+	status = "okay";
+};
+
+&pwm1 {
+	status = "okay";
+};
-- 
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